农田栽培人参土壤肥力评价

Evaluation of Soil Fertility of Cultivated Panax ginseng in Farmland

为明确农田栽培人参土壤养分及综合肥力状况,为人参种植合理选地改土提供参考,对农田栽培人参14个主要县市种植区42份样品的14项土壤养分指标进行测试,采用主成分分析和模糊数学隶属度函数模型,并利用土壤肥力综合指标值(IFI)对土壤肥力状况进行综合评价。结果表明:土壤有机质、全氮、全磷、碱解氮、速效钾及微量元素有效态铁、锰含量相对丰富。人参种植区土壤肥力综合指数值IFI平均值为0.71,多数处于Ⅰ、Ⅱ级,其中属于Ⅰ、Ⅱ级水平的土壤肥力占采样区的66.67%,土壤肥力整体水平良好。

In order to clarify the soil nutrients and comprehensive fertility of Panax ginseng cultivated in farmland and provide reference for rational planting ginseng,14 soil nutrient indexes of 42 soil samples from 14 counties and cities in ginseng producing areas were studied,the soil fertility status was comprehensively evaluated by principal component analysis and fuzzy mathematics membership function model,and the comprehensive index value(IFI)of soil fertility was calculated.The results showed that the contents of soil organic matter,total nitrogen,total phosphorus,alkali-hydrolyzed nitrogen,available potassium,available iron and manganese were sufficient.The average of IFI value of soil fertility index of farmland ginseng in field producing area was 0.71,and most of them were in gradeⅠand gradeⅡ.Among them,the soil fertility accounted for 66.67%of the sampling area,and the overall level of soil was good.